MIC4428BMM-TR Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The MIC4428BMM-TR is a low-side gate driver IC manufactured by Microchip Technology, designed to drive N-Channel and P-Channel MOSFETs with independent dual-channel configuration. This device operates across a 4.5V to 18V supply range and delivers 1.5A peak output current on both source and sink paths. The MIC4428BMM-TR is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	MIC4428BMM-TR
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Description	IC GATE DRVR LOW-SIDE 8MSOP
Driven Configuration	Low-Side
Number of Drivers	2
Gate Type	N-Channel, P-Channel MOSFET
Voltage - Supply	4.5V ~ 18V
Logic Voltage - VIL, VIH	0.8V, 2.4V
Current - Peak Output (Source, Sink)	1.5A, 1.5A
Input Type	Inverting, Non-Inverting
Rise / Fall Time (Typ)	20ns, 29ns
Operating Temperature	-40°C ~ 150°C (TJ)
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MIC4428BMM-TR is determined by the following critical parameters:

Primary Substitution Criteria:

Driven Configuration: Low-Side
Number of Drivers: 2 (independent channels)
Gate Type: N-Channel and P-Channel MOSFET support
Input Type: Inverting and Non-Inverting capability
Package / Case: 8-MSOP form factor with 0.118" (3.00mm) width
Mounting Type: Surface Mount

Electrical Compatibility Parameters:

Supply Voltage Range: Must encompass or match 4.5V ~ 18V
Peak Output Current: Source and Sink capability of 1.5A minimum
Logic Voltage Thresholds: VIL and VIH compatibility
Rise / Fall Time: Performance within acceptable switching speed range
Operating Temperature: Must support -40°C ~ 150°C (TJ) or equivalent

Substitute parts identified below meet these core criteria while maintaining functional equivalence for gate driver applications.

Parameter Comparison

Parameter	MIC4428BMM-TR	MIC4428YMM-TR	TC4428VUA	UCC27325DGN	UCC27325DGNR	UCC37325DGN	UCC37325DGNR
Manufacturer	Microchip	Microchip	Microchip	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Driven Configuration	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side	Low-Side
Number of Drivers	2	2	2	2	2	2	2
Gate Type	N-Channel, P-Channel	N-Channel, P-Channel	N-Channel, P-Channel	N-Channel, P-Channel	N-Channel, P-Channel	N-Channel, P-Channel	N-Channel, P-Channel
Voltage - Supply	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 18V	4.5V ~ 15V	4.5V ~ 15V	4.5V ~ 15V	4.5V ~ 15V
Logic Voltage - VIL, VIH	0.8V, 2.4V	0.8V, 2.4V	0.8V, 2.4V	1V, 2V	1V, 2V	1V, 2V	1V, 2V
Current - Peak Output (Source, Sink)	1.5A, 1.5A	1.5A, 1.5A	1.5A, 1.5A	4A, 4A	4A, 4A	4A, 4A	4A, 4A
Input Type	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting	Inverting, Non-Inverting
Rise / Fall Time (Typ)	20ns, 29ns	20ns, 29ns	19ns, 19ns	20ns, 15ns	20ns, 15ns	20ns, 15ns	20ns, 15ns
Operating Temperature	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 125°C (TA)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Package / Case	8-MSOP	8-MSOP	8-MSOP	8-HVSSOP	8-HVSSOP	8-HVSSOP	8-HVSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued	Active	Active	Last Time Buy	Active	Last Time Buy	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Microchip Technology Substitutes (MIC4428YMM-TR, TC4428VUA):

MIC4428YMM-TR provides direct functional equivalence to the MIC4428BMM-TR with identical electrical specifications and 8-MSOP packaging. This part is currently Active and ROHS3 Compliant, addressing regulatory requirements. The primary distinction is packaging format (Cut Tape & Digi-Reel versus Tape & Reel).

TC4428VUA maintains electrical compatibility across all critical parameters with Active product status and ROHS3 Compliance. Operating temperature specification differs (TA -40°C ~ 125°C versus TJ -40°C ~ 150°C), which may impact applications requiring extended junction temperature operation. Packaging is supplied in Tube format.

Texas Instruments Substitutes (UCC27325DGN, UCC27325DGNR, UCC37325DGN, UCC37325DGNR):

Texas Instruments UCC27325 and UCC37325 series devices provide enhanced peak output current capability (4A source/sink versus 1.5A), supporting higher-current gate drive applications. Supply voltage range is constrained to 4.5V ~ 15V, requiring verification for designs operating above 15V. Package format is 8-HVSSOP with exposed pad, differing from the original 8-MSOP.

UCC27325DGNR and UCC37325DGNR are Active products with ROHS3 Compliance and higher inventory availability. UCC27325DGN and UCC37325DGN carry Last Time Buy status, indicating limited future availability.

Compliance Considerations:

All identified substitutes except the original MIC4428BMM-TR are ROHS3 Compliant. For applications requiring RoHS non-compliant components, the MIC4428BMM-TR remains the only option among listed alternatives.

Frequently Asked Questions (FAQ)

Q: Can MIC4428YMM-TR directly replace MIC4428BMM-TR without PCB modification?

A: MIC4428YMM-TR maintains identical electrical specifications and 8-MSOP package footprint. Substitution requires no PCB layout changes. Packaging format differs (Cut Tape & Digi-Reel versus Tape & Reel), affecting procurement and handling only.

Q: What are the implications of using UCC27325DGNR instead of MIC4428BMM-TR?

A: UCC27325DGNR provides 4A peak output current versus 1.5A, supporting higher-current gate drive requirements. Supply voltage range is limited to 4.5V ~ 15V; designs operating above 15V require verification. Package format changes from 8-MSOP to 8-HVSSOP with exposed pad, necessitating PCB footprint redesign.

Q: Is TC4428VUA suitable for applications requiring -40°C ~ 150°C junction temperature operation?

A: TC4428VUA specifies operating temperature as -40°C ~ 125°C (TA, ambient), differing from the original -40°C ~ 150°C (TJ, junction). Applications requiring sustained junction temperatures above 125°C should verify thermal performance through detailed analysis or testing.

Q: Why do UCC27325 and UCC37325 devices have higher peak output current?

A: UCC27325 and UCC37325 series are designed for higher-current gate drive applications. The 4A capability accommodates larger MOSFET gates and faster switching transitions compared to the 1.5A specification of MIC4428 devices.

Q: Are all substitute parts ROHS3 Compliant?

A: All identified substitutes except the original MIC4428BMM-TR are ROHS3 Compliant. The original MIC4428BMM-TR is RoHS non-compliant. Regulatory requirements determine compliance necessity for specific applications.

Q: What packaging considerations apply when selecting between Microchip and Texas Instruments alternatives?

A: Microchip alternatives (MIC4428YMM-TR, TC4428VUA) maintain 8-MSOP packaging compatible with original MIC4428BMM-TR footprints. Texas Instruments alternatives use 8-HVSSOP with exposed pad, requiring PCB redesign. Package selection depends on existing PCB layout constraints and thermal management requirements.

Q: Can MIC4428YMM-TR and TC4428VUA be used interchangeably?

A: Both maintain identical electrical specifications and 8-MSOP packaging. Substitution between these parts requires no circuit or PCB modifications. Selection depends on packaging format preference (Cut Tape & Digi-Reel versus Tube) and supplier availability.

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